


// @media all and (-moz-min-device-pixel-ratio: 1.09) and (-moz-max-device-pixel-ratio: 1.18),
//     (-webkit-min-device-pixel-ratio: 1.09) and (-webkit-max-device-pixel-ratio: 1.18),
//     (min-resolution: 1.09dppx) and (max-resolution: 1.18dppx) {
//     body,html{
//         font-size:12px;
//     }
// }
// @media all and (-moz-min-device-pixel-ratio: 1.19) and (-moz-max-device-pixel-ratio: 1.28),
//     (-webkit-min-device-pixel-ratio: 1.19) and (-webkit-max-device-pixel-ratio: 1.28),
//     (min-resolution: 1.19dppx) and (max-resolution: 1.28dppx) {
//         body,html{
//             font-size:11px;
//         }
// }
// @media all and (-moz-min-device-pixel-ratio: 1.29) and (-moz-max-device-pixel-ratio: 1.4),
//     (-webkit-min-device-pixel-ratio: 1.29) and (-webkit-max-device-pixel-ratio: 1.4),
//     (min-resolution: 1.29dppx) and (max-resolution: 1.4dppx) {
//         body,html{
//             font-size:10px;
//         }
// }
// @media all and (-moz-min-device-pixel-ratio: 1.41) and (-moz-max-device-pixel-ratio: 1.6),
//     (-webkit-min-device-pixel-ratio: 1.41) and (-webkit-max-device-pixel-ratio: 1.6),
//     (min-resolution: 1.41dppx) and (max-resolution: 1.6dppx) {
//         body,html{
//             font-size:9px;
//         }
// }
// @media all and (-moz-min-device-pixel-ratio: 1.61) and (-moz-max-device-pixel-ratio: 1.8),
//     (-webkit-min-device-pixel-ratio: 1.61) and (-webkit-max-device-pixel-ratio: 1.8),
//     (min-resolution: 1.61dppx) and (max-resolution: 1.8dppx) {
//         body,html{
//             font-size:8px;
//         }
// }
// @media all and (-moz-min-device-pixel-ratio: 1.81) and (-moz-max-device-pixel-ratio: 2.1),
//     (-webkit-min-device-pixel-ratio: 1.81) and (-webkit-max-device-pixel-ratio: 2.1),
//     (min-resolution: 1.81dppx) and (max-resolution: 2.1dppx) {
//         body,html{
//             font-size:7px;
//         }
// }
// device-pixel-ratio像素比